Went over the summer with two kids 9&8 - the wristbands for €15 were good value for the kids (and saved the parents rows as they allow for unlimited on the rides).

Rollercoaster is brilliant - one of the best ever. Parents may be better off buying tokens unless you plan on going on rollercoaster more than twice (queue was about 45 mins when we were there but off season would be less).

We changed our tickets €60 to family pass for another €95 - Total €155 for 4. Great value if you plan on going a few more times. We told kids we are going to go some times for a picnic and to enjoy the free activities (animals, playground, train, factory).

It would still be a day they would enjoy - but only after they have had a go on rollercoaster ;-)